コード例 #1
0
  @Override
  public int run(String[] arg0) throws Exception {
    // config a job and start it
    Configuration conf = getConf();
    Job job = new Job(conf, "Index construction..");
    job.setJarByClass(IndexConstructorDriver.class);
    job.setMapperClass(IndexConstructorMapper.class);
    job.setReducerClass(IndexConstructorReducer.class);

    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(InvertedListWritable.class);
    job.setMapOutputKeyClass(Text.class);
    job.setMapOutputValueClass(Text.class);

    job.setInputFormatClass(SequenceFileInputFormat.class);
    job.setOutputFormatClass(SequenceFileOutputFormat.class);

    // can add the dir by the config
    FileSystem fs = FileSystem.get(conf);
    String workdir = conf.get("org.joy.crawler.dir", "crawler/");
    fs.delete(new Path(workdir + "indexOutput/"), true);
    FileInputFormat.addInputPath(job, new Path(workdir + "content/"));
    FileOutputFormat.setOutputPath(job, new Path(workdir + "indexOutput/"));
    System.out.println(
        "indexer starts to work, it begins to construct the index, please wait ...\n");
    return job.waitForCompletion(true) ? 0 : 1;
  }
コード例 #2
0
  public static void main(String args[]) throws Exception {
    Configuration c = new Configuration();
    if (args.length != 2) {
      System.out.println("provide sufficient arguments");
      System.exit(-1);
    }
    Job job = Job.getInstance(c, "Wordcount");
    job.setJarByClass(Wordcount.class);

    job.setMapOutputKeyClass(Text.class);
    job.setMapOutputValueClass(IntWritable.class);

    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(Text.class);

    job.setMapperClass(Map.class);
    job.setReducerClass(Reduce.class);

    job.setInputFormatClass(TextInputFormat.class);
    job.setOutputFormatClass(TextOutputFormat.class);

    FileInputFormat.addInputPath(job, new Path(args[0]));
    FileOutputFormat.setOutputPath(job, new Path(args[1]));
    //	job.submit();
    job.waitForCompletion(true);
  }
コード例 #3
0
  @Override
  public int run(String[] args) throws Exception {

    String locatorHost = args[0];
    int locatorPort = Integer.parseInt(args[1]);
    String hdfsHomeDir = args[2];

    System.out.println(
        "KnownKeysMRv2 invoked with args (locatorHost = "
            + locatorHost
            + " locatorPort = "
            + locatorPort
            + " hdfsHomeDir = "
            + hdfsHomeDir);

    Configuration conf = getConf();
    conf.set(GFInputFormat.INPUT_REGION, "partitionedRegion");
    conf.set(GFInputFormat.HOME_DIR, hdfsHomeDir);
    conf.setBoolean(GFInputFormat.CHECKPOINT, false);
    conf.set(GFOutputFormat.REGION, "validationRegion");
    conf.set(GFOutputFormat.LOCATOR_HOST, locatorHost);
    conf.setInt(GFOutputFormat.LOCATOR_PORT, locatorPort);

    Job job = Job.getInstance(conf, "knownKeysMRv2");
    job.setInputFormatClass(GFInputFormat.class);
    job.setOutputFormatClass(GFOutputFormat.class);

    job.setMapperClass(KnownKeysMRv2Mapper.class);
    job.setMapOutputKeyClass(GFKey.class);
    job.setMapOutputValueClass(PEIWritable.class);

    job.setReducerClass(KnownKeysMRv2Reducer.class);
    // job.setOutputKeyClass(String.class);
    // job.setOutputValueClass(ValueHolder.class);

    return job.waitForCompletion(false) ? 0 : 1;
  }